Common Inverter Problems and When You Need Professional Service

Most inverter complaints we attend in Siliguri come down to a handful of causes, and a few of them you can resolve yourself in five minutes. Knowing which is which saves you a service call — and, more importantly, tells you when not to wait.

Backup time has dropped suddenly

This is almost always the battery rather than the inverter. Check the water level first; low electrolyte reduces capacity quickly. If the level is fine and backup is still poor, the battery likely needs a load test — after four or five years, capacity loss is normal and replacement is the fix.

The inverter is beeping continuously

• Overload — unplug high-draw appliances such as heaters, irons or pumps
• Low battery — normal near the end of a long cut; it stops once the grid returns
• Loose or corroded terminal — a common cause of false alarms
• Persistent beeping with no obvious cause — stop using it and call for a check

It is not charging when power is on

Check the mains socket and the inverter's own fuse before anything else. If both are fine and the charging indicator stays off, the charging section usually needs attention from a technician — this is not a repair to attempt at home.

The unit is unusually hot or smells burnt

Switch it off at the mains and disconnect the battery. A burning smell, a swollen battery casing or visible scorching are safety issues, not performance issues. Call for service rather than restarting the system to see if it recovers.

Fans are humming or lights flicker on backup

This usually indicates a square wave or modified sine wave output driving appliances that expect clean power. It is a mismatch rather than a fault, and the remedy is a pure sine wave inverter.

When to call us

Vinit Enterprises provides inverter and battery service across Siliguri, including doorstep checks and emergency assistance when a system fails without warning. If you are unsure whether a symptom is serious, a phone call costs nothing.